{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "patch vulnerability", "arguments": ["patch", "vulnerability", "supported platform", "vulnerable system", "patch number", "vulnerable system version", "issues addressed", "common vulnerabilities and exposures", "time"]}], "input": "The flaws , made public in 2016 by Muddy Waters and security firm MedSec , could allow an unauthorized user to access the defibrillaors and modify the programming controls ."}
{"patch vulnerability": []}